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    Detection system and picture filtering method thereof
    1.
    发明授权
    Detection system and picture filtering method thereof 有权

    公开(公告)号：US10354413B2

    公开(公告)日：2019-07-16

    申请号：US15813935

    申请日：2017-11-15

    Applicant: PixArt Imaging Inc.

    Inventor： Chung-Yuo Wu

    IPC: G06T7/90 ,  H04N5/33 ,  G06K9/20 ,  G06K9/00 ,  H04N5/225 ,  H04N5/222

    Abstract: A detection system including a light source, an image sensor and a processor is provided. The light source is configured to illuminate an object. The image sensor is configured to output a picture. The processor is configured to generate an IR picture and a color picture according to the picture captured by the image sensor, identify a skin-color object in the color picture and determine an object image in the IR picture according to the skin-color object.

    MOVEMENT DETECTION METHOD AND JOYSTICK DEVICE WHICH CAN SENSITIVELY DETECT ROTATION AND TRANSLATION
    2.
    发明公开
    MOVEMENT DETECTION METHOD AND JOYSTICK DEVICE WHICH CAN SENSITIVELY DETECT ROTATION AND TRANSLATION 审中-公开

    公开(公告)号：US20240233141A9

    公开(公告)日：2024-07-11

    申请号：US17970542

    申请日：2022-10-20

    Applicant: PixArt Imaging Inc.

    Inventor： Yi-Chung Chen ,  Chao-Chien Huang ,  Chung-Yuo Wu

    IPC: G06T7/246 ,  A63F13/213 ,  A63F13/24 ,  G06F3/0338

    CPC classification number: G06T7/248 ,  A63F13/213 ,  A63F13/24 ,  G06F3/0338 ,  A63F2300/1043 ,  A63F2300/1087

    Abstract: A movement detection method, applied to a navigation input device with a navigation pattern comprising a center pattern and a radial pattern. The movement detection method comprises: (a)capturing a sensing image comprising a center pattern image and at least portion of a radial pattern image by an image sensor, wherein the center pattern image corresponds to the center pattern and the radial pattern image corresponding to the radial pattern; (b)computing a translation of the navigation input device according to shift of the center pattern image; and (c)computing a rotation angle of the navigation input device according to a first pattern relation between the center pattern image and a first portion of the radial pattern image. The translation and the rotation angle can be precisely and sensitively detected even if the joystick device is miniaturized, since the translation and the rotation angle are computed according to the navigation pattern.

    OPTICAL MEDICAL DETECTION DEVICE
    4.
    发明申请
    OPTICAL MEDICAL DETECTION DEVICE 有权

    公开(公告)号：US20210290085A1

    公开(公告)日：2021-09-23

    申请号：US16822024

    申请日：2020-03-18

    Applicant: PixArt Imaging Inc.

    Inventor： Shih-Jen Lu ,  Yang-Ming Chou ,  Chien-Yi Kao ,  Hsin-Yi Lin ,  Chih-Ming Sun ,  Chung-Yuo Wu

    IPC: A61B5/0295 ,  A61B5/026 ,  A61B5/021 ,  A61B5/00 ,  A61B5/0205

    Abstract: An optical medical detection device includes a first physiological sensor and a processor. The first physiological sensor is adapted to continuously output a first photoplethysmography (PPG) signal generated by a first skin area of an object, and further to optionally and continuously output a second photoplethysmography (PPG) signal generated by a second skin area of the object. The second skin area is different from the first skin area. The processor is electrically connected to the first physiological sensor. The processor is adapted to convert the first PPG signal and the second PPG signal into a physiological feature, and the physiological feature is at least one of a blood pressure ratio and a blood flow velocity.

    MOVEMENT DETECTION METHOD AND JOYSTICK DEVICE WHICH CAN SENSITIVELY DETECT ROTATION AND TRANSLATION
    8.
    发明公开
    MOVEMENT DETECTION METHOD AND JOYSTICK DEVICE WHICH CAN SENSITIVELY DETECT ROTATION AND TRANSLATION 审中-公开

    公开(公告)号：US20240135553A1

    公开(公告)日：2024-04-25

    申请号：US17970542

    申请日：2022-10-19

    Applicant: PixArt Imaging Inc.

    Inventor： Yi-Chung Chen ,  Chao-Chien Huang ,  Chung-Yuo Wu

    IPC: G06T7/246 ,  A63F13/213 ,  A63F13/24 ,  G06F3/0338

    CPC classification number: G06T7/248 ,  A63F13/213 ,  A63F13/24 ,  G06F3/0338 ,  A63F2300/1043 ,  A63F2300/1087

    Abstract: A movement detection method, applied to a navigation input device with a navigation pattern comprising a center pattern and a radial pattern. The movement detection method comprises: (a)capturing a sensing image comprising a center pattern image and at least portion of a radial pattern image by an image sensor, wherein the center pattern image corresponds to the center pattern and the radial pattern image corresponding to the radial pattern; (b)computing a translation of the navigation input device according to shift of the center pattern image; and (c)computing a rotation angle of the navigation input device according to a first pattern relation between the center pattern image and a first portion of the radial pattern image. The translation and the rotation angle can be precisely and sensitively detected even if the joystick device is miniaturized, since the translation and the rotation angle are computed according to the navigation pattern.

    Detection system and picturing filtering method thereof
    9.
    发明授权
    Detection system and picturing filtering method thereof 有权

    公开(公告)号：US10803625B2

    公开(公告)日：2020-10-13

    申请号：US16427419

    申请日：2019-05-31

    Applicant: PixArt Imaging Inc.

    Inventor： Chung-Yuo Wu

    IPC: G06T7/90 ,  H04N5/33 ,  G06K9/20 ,  G06K9/00 ,  H04N5/225 ,  H04N5/222

    Abstract: A detection system including a light source, an image sensor and a processor is provided. The light source is configured to illuminate an object. The image sensor is configured to output a picture. The processor is configured to generate an IR picture and a color picture according to the picture captured by the image sensor, identify a skin-color object in the color picture and determine an object image in the IR picture according to the skin-color object.

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